A lot of times when re-configuring a helm, we end up with 2" gauges we no longer need. That leaves a 2" hole, with something that needs to go in it.
What I do is get a gauge blank (I get mine from greatlakesskipper, but I bet MCL has a ton of them), then install a 12 Volt outlet in the center. The Cape Horn had an ancient Uniden depth gauge that went south many moons ago, now we have this...
Just an idea...